RU2037626C1 - Oil filter for internal combustion engine - Google Patents

Abstract

FIELD: internal combustion engines. SUBSTANCE: filter has housing 1 in whose base inlet passage 2 and outlet passage 3 are provided, coil 4 with perforated core 5 and ends between which filter elements 7 are tightly secured. Taper bush 10 made of filtering material is secured on end 6 which is located at maximum distance from inlet passage 2 and outlet passage 3. Bush 10 forms well for accumulating dirt together with filter elements and prevents it from washing out by oil flowing through bypass valve. EFFECT: enhanced efficiency. 2 dwg

Description

 The invention is intended for the purification of oil in the lubrication system and can mainly be used in automotive internal combustion engines.

 Known oil filter is full-flow, non-separable, including a housing, a filter element with a viscose fiber insert, anti-drainage and bypass valves.

 The known filter has a drawback: during normal engine operation, solid particles and other inclusions formed during the operation of the car engine are deposited on the outer surface of the filter element. During operation of a cold engine and with significant contamination of the filter element, excessive oil pressure is generated at which the bypass valve and crude oil are automatically opened, further washing away previously accumulated solid particles and other impurities from the filter element, rushes through the open valve into the engine lubrication system, which contributes to reduce engine life.

 The aim of the invention is to increase the life of the engine due to the elimination of erosion by the oil flow of dirt deposited on the filter element and its entrainment through the bypass valve into the engine lubrication system.

 This goal is achieved by the fact that in the oil full-flow, non-separable filter, a sleeve made of filter material and in the form of a truncated cone is tightly fixed between the ends, the smaller base of which is fixed to the end of the coil, the most remote from the channels in the base of the housing.

 The sleeve, together with the filter elements, forms a pocket for the accumulation of dirt and protects it from erosion by the flow of oil flowing through the bypass valve. The proposed design of the sleeve allows the filter to pass oil freely to the filter elements in the normal mode of operation, while the sleeve as a filter element does not work and dirt does not settle on it.

 In the case of oil passing through the bypass valve, part of the oil will go through the sleeve cleaned, and the other part of the oil will go uncleaned, and the inclusions that have settled earlier will remain on the filter, which will increase the life of the engine.

 In FIG. 1 and 2 the filter is shown.

 The filter design includes a housing 1, at the base of which inlet 2 and exhaust 3 channels are made, a coil 4 with a perforated core 5 and ends 6 installed in the housing, between which filter elements 7 are tightly fixed. A drain valve 8 is installed on the inlet channel 2 to prevent oil drainage from the system after the engine is stopped and the bypass valve 9 is activated when the cold engine starts and the filter element 7 is clogged. At the end 6 of the coil 4 closest from the inlet 2 and outlet 3 channels The conical sleeve 10 made of filter material is insulated.

 In the normal mode of operation of the filter, oil enters through the inlet channels 2, valve 9, the gap between the sleeve 10 and the filter element 7, then after filtering the oil enters through the outlet channels 3 into the engine lubrication system. Solid particles and other inclusions are deposited on the outer walls of the filter elements 7 and on the inner wall of the sleeve 10.

 During operation of a cold engine with viscous oil or with a significant clogging of the filter, excessive oil pressure is created, as a result of which the bypass valve 9 opens and part of the crude oil enters the gap between the sleeve 10 and the housing 1, and the other part passes through the sleeve 10 to the bypass valve 9 and further into the engine lubrication system, while the settled dirt on the walls of the filter elements 7 is protected by the sleeve 10 from being washed off by the oil flow into the bypass valve 9. The sleeve 10 is made in the form of a truncated cone, a smaller base which is fixed to the end of the coil, the most remote from the channels 2 and 3 in the base of the housing 1. The sleeve is made of filter material.

Claims (1)

 OIL FILTER FOR INTERNAL COMBUSTION ENGINE, comprising a housing, at the base of which intake and exhaust channels are made, a coil installed in it, filter elements tightly fixed between its ends, an anti-drain valve installed with the possibility of blocking the intake channels, and an overflow valve, characterized in that it equipped with a sleeve made of filter material in the form of a truncated cone, the smaller base of which is fixed to the end of the coil, the most remote from the channels in the base of the housing.

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